The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2022
Filed:
Nov. 02, 2020
SI Group, Inc., Schenectady, NY (US);
Cornelius Haase, Schenectady, NY (US);
Ricky Biittig, Schenectady, NY (US);
Allyson Staats, Schenectady, NY (US);
Philip David Atwood, Schenectady, NY (US);
Jim Webb, Ballston Lake, NY (US);
Kelly Chichak, Schenectady, NY (US);
SI GROUP, INC., Schenectady, NY (US);
Abstract
This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.